[GS Error] Got Some Wired Error

[ment2008]

my GS start give some error and i cannot figgure out what the reason and how slove it:

 

WARNING: Cannot create item 0

java.lang.NullPointerException

at com.l2jserver.gameserver.skills.DocumentItem.parseItem(DocumentItem.java:100)

at com.l2jserver.gameserver.skills.DocumentItem.parseDocument(DocumentItem.java:83)

at com.l2jserver.gameserver.skills.DocumentBase.parse(DocumentBase.java:146)

at com.l2jserver.gameserver.skills.SkillsEngine.loadItems(SkillsEngine.java:110)

at com.l2jserver.gameserver.datatables.ItemTable.load(ItemTable.java:199)

at com.l2jserver.gameserver.datatables.ItemTable.<init>(ItemTable.java:190)

at com.l2jserver.gameserver.datatables.ItemTable.<init>(ItemTable.java:56)

at com.l2jserver.gameserver.datatables.ItemTable$SingletonHolder.<clinit>(ItemTable.java:480)

at com.l2jserver.gameserver.datatables.ItemTable.getInstance(ItemTable.java:170)

at com.l2jserver.gameserver.GameServer.<init>(GameServer.java:233)

at com.l2jserver.gameserver.GameServer.main(GameServer.java:493)

Jan 18, 2011 8:29:04 PM com.l2jserver.gameserver.skills.DocumentItem parseDocument

[Matim]

NPE.

[ment2008]

NPE.

 

k i got the point its null problm, but how should i find it?